The output is not right

[ialhayd]

Hello,

I am working on a small program for the school. I have done everything, but the output is not as expected to be.
the program is reading data from a text file and using them for some calculation and storing the result in a new text file.

--here is the code--

#include <iostream>    //input output stream
#include <fstream>     //file stream
#include <iomanip>     //input output manipulation
using namespace std;

//Function Prototype
bool process_employee (ifstream& inFile);
void process_payroll (ifstream& inFile);
void print_results(ofstream& outFile);

int main()
{

	double gross = 0;
	double bonus = 0;
	double adjGross = 0;

	//Declare file to be read from
	ifstream inFile;
	inFile.open("empInFile.txt");//open the file

	if(!inFile)
	{
		cout << "\n\nThe input file has not opened.\n"
		<< "Check that the file exists.\n" << endl;
		system("pause");
		exit(1);
	}//IF statement to test that the inFile opens

	//Calls to the process_payroll funtion to perform calculations

	process_payroll(inFile);
	system("pause");

	return 0;

}//main

//This function reads the employee information from the input file and returns them through referenced variables
//if the employee information is read successfully it returns 1 otherwise it returns 0.
bool process_employee (ifstream& inFile)
{
	//Declare arrays
	char employee_name [15];
	double hourly_wage [15];
	int hours_worked [15];

	if(inFile >> employee_name, hourly_wage, hours_worked)
		return 1;
	else
		return 0;

}// process_employee function

void process_payroll (ifstream& inFile)
{

	//Local Declarations
	ofstream outFile;

	//Open the outFile
	outFile.open("empReport.txt");//open the file

	if (!outFile)
	{
		cout << "\n\nThe output file has not opened.\n"
			<< endl;
		system("pause");
		exit(1);
	}//IF statement to test that the outFile opens
	else
	{
		cout << "Every thing is working fine." << endl;
	}
	//Calling process_employee function from inside a loop until zero is returned.
	
	while (process_employee(inFile))
	{
		//Calls to the print_summary function to output all calculations
		print_results(outFile);
	}

	//*******************************************************************

	//close the ifstream inFile connection between the program and the file input.txt
	inFile.close();

	return;

}

//This function prints out the Summary message;

void print_results(ofstream& outFile)
{

	//Local Declarations
	int hours = 0;
	int rate = 0;
	int minWage = 0;
	int maxWage = 0;

	double minValue = 100;
	double maxValue = 0;
	double totAvg = 0;

	//Declare arrays
	char employee_name [15];
	double hourly_wage [15];
	int hours_worked [15];
	int empFiles = employee_name[15];

	//Statements
	for(int i = 0; i < empFiles; i++)
	{
		if(hourly_wage[i] > maxValue)
		{
			maxValue = hourly_wage[i];
			maxWage = i;
		}

		if(minValue > hourly_wage[i])
		{
			minValue = hourly_wage[i];
			minWage = i;
		}

		totAvg = totAvg + hourly_wage[i];
	}//For Loop

	//The output of the minimum and maximum wage calculations and the average wage

	outFile << "\n\nThe number of records read: " << empFiles << "\n"
	<< "Maximum Pay Rate: " << employee_name[maxWage] << " @ $" << hourly_wage[maxWage] << "\n"
	<< "Minimum Pay Rate: " << employee_name[minWage] << " @ $" << hourly_wage[minWage] << "\n"
	<< "Average Pay: $" << totAvg / empFiles << endl;

	if(empFiles >= 10)
	{
		outFile << "More than 10 names have been read in."<<endl;//error processing in case more than 10 names are attempted to be read in.
	}

	outFile << "\n\nOctober 2009 Payroll:\t\t\n\n";
	outFile << "Employee Name \t Hours \t Rate \t Gross Bonus \t Adjusted_Gross" << endl;
	outFile << "\n\n\n";

	//format the ouput data
	outFile << std::fixed << setprecision(2) ;

	//Calculate the max and min wages
	//Begin a series of true or false tests with IF Statements and specific expressions for each scenario

	if(hours_worked[hours] > 45)//IF Statement for hours greater than 45
	{

		//Local declaration
		double gross = (hourly_wage[rate] * hours_worked[hours]);
		char bonus = 'Y';
		double adjGross = gross + 50;

		//Statements
		outFile << "\n    "<< employee_name	<< "\t" << hours_worked[hours] << "\t" << hourly_wage[rate] << "\t" << gross << "\t" << bonus << "\t" << adjGross << endl;

	}//IF Statement for hours greater than 45

	if(hours < 30)//IF Statement for hours less than 30
	{
		//Local Declarations and Statements of expressions for calculating each variable
		double gross = (hourly_wage[rate] * hours_worked[hours]);
		char bonus = 'N';
		double adjGross = gross - (hourly_wage[rate] * hours_worked[hours]) - (hours_worked[hours] * .25);

		//Statements
		outFile<< "\n    "<< employee_name << "\t" << hours << "\t"	<< rate << "\t"	<< gross << "\t" << bonus << "\t" << adjGross << endl;

	}//IF Statement for hours less than 30

	if(hours >= 30 && hours <=44)//IF Statement for hours between 35 and 44
	{
		//Local Declarations
		double gross = (hourly_wage[rate] * hours_worked[hours]);
		char bonus = 'N';
		double adjGross = gross;

		//Statements
		outFile<< "\n    "<< employee_name << "\t" << hours << "\t"	<< rate << "\t"	<< gross << "\t" << bonus << "\t" << adjGross << endl;

	}//IF Statement for hours between 35 and 44

	outFile.close();

	return;

}//print_summary
//control passes back to the main function to system("pause") 

--here is what in the input file--

Clinton 10.00 10
Lincoln 5.00 50
Washington 32.00 35
Kennedy 4.99 45
Nixon 10.00 25

--here is what I get in the output file--

The number of records read: -52
Maximum Pay Rate: Ì @ $-9.25596e+61
Minimum Pay Rate: Ì @ $-9.25596e+61
Average Pay: $-0


October 2009 Payroll:		

Employee Name 	 Hours 	 Rate 	 Gross Bonus 	 Adjusted_Gross




    ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ	0	0	79508117989074987650738332503294079560541330881152498119070395440037888.00	N	214748365.00

[ne555]

$ g++ -W{all,extra,pedantic} foo.cpp
|| foo.cpp: In function ‘int main()’:
foo.cpp|14 col 9| warning: unused variable ‘gross’ [-Wunused-variable]
foo.cpp|15 col 9| warning: unused variable ‘bonus’ [-Wunused-variable]
foo.cpp|16 col 9| warning: unused variable ‘adjGross’ [-Wunused-variable]
|| foo.cpp: In function ‘bool process_employee(std::ifstream&)’:
foo.cpp|48 col 43| warning: right operand of comma operator has no effect [-Wunused-value]
|| foo.cpp: In function ‘void print_results(std::ofstream&)’:
foo.cpp|116 col 19| warning: ‘hourly_wage[<unknown>]’ may be used uninitialized in this function [-Wmaybe-uninitialized]
foo.cpp|118 col 13| warning: ‘hourly_wage[<unknown>]’ may be used uninitialized in this function [-Wmaybe-uninitialized]
foo.cpp|122 col 30| warning: ‘hourly_wage[<unknown>]’ may be used uninitialized in this function [-Wmaybe-uninitialized]
foo.cpp|124 col 13| warning: ‘hourly_wage[<unknown>]’ may be used uninitialized in this function [-Wmaybe-uninitialized]
foo.cpp|128 col 34| warning: ‘hourly_wage[<unknown>]’ may be used uninitialized in this function [-Wmaybe-uninitialized]

//foo.cpp|48 col 43| warning: right operand of comma operator has no effect [-Wunused-value]
	if(inFile >> employee_name, hourly_wage, hours_worked)

to read into a variable use >>
inFile >> a >> b >> c;
however `hourly_wage' is an array, so I'm not sure what you're trying to do there

> warning: ‘hourly_wage[<unknown>]’ may be used uninitialized in this function
this is a conceptual error
read about local variables and pass by reference

[ialhayd]

Thank you for your response

I have to read the date from the file to arrays then I have to make the calculation by the arrays and after that, I put the result in the new file.

[ialhayd]

any help please!!

[ne555]

int main(){
	const int n = 15;
	std::string name[n];
	double hourly_wage[n];
	int hours_worked[n];
	double gross[n];

	ifstream input;
	ofstream output;

	int size = 0;
	for(int size=0; size<n; ++size){
		if(not process_employee(input, hourly_wage[size], hours_worked[size]))
			break;
	}


	for(int K=0; K<size; ++K)
		gross[K] = process_payroll(name[K], hourly_wage[K], hours_worked[K]);

	print_results(output, name[K], hourly_wage[K], hours_worked[K], gross[K]);
}

//pass by reference because you want to modify them
bool process_employee(ifstream &input, std::string &name, double &hourly_wage, int &hours_worked){
	if(input>>name>>hourly_wage>>hours_worked)
		return true;
	return false;
}

double process_payroll(int hourly_wage, double hours_worked);